CD8A and bacterial urinary tract infection: Considering lymphocyte subtypes, higher T-cell counts, especially cytotoxic T-cell (CD8 +) counts (HR [95% CI]: 0.43 [0.20–0.95]), and higher NK cell (CD16 +) counts (HR [95% CI]: 0.56 [0.31–1.02]) were associated with lower risk of UTI.